题目

(8分)1.(1)判断下列各式是否成立,你认为成立的,请在括号内打“√”,不成立的请在括号内打“×”①   ( )    ②    ( )③  ( )     ④ ( )2.(2)判断完以上各题之后,从正确的各式中你发现什么规律?请用含有n(n≥2的自然数)的式子将规律表示出来,并写出运算过程.  答案: 1.解:(1)①√ ②√ ③√④√2.(2)规律:(5分)运算过程:解析:略 Xiao Li has _______ homework and she really doesn’t know ______ first. A. much too; what to do                B. too much; to do what C. much too; to do what                D. too much; what to do
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